Siemens S5-135U/155U appendix Maintenance, Replacing the Lithium Battery, Battery Submodule

Models: S5-135U/155U

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Central Controllers and Expansion Units Power Supply Units

4.4.5Maintenance

Replacing the Lithium Battery

!

Caution

Incorrect replacement of the battery can result in the danger of explosion.

It should only be replaced by the same type or an equivalent type recommended by the manufacturer. Used batteries should be disposed of according to the manufacturer's instructions.

You can replace the backup battery without loss of data if the power supply unit is switched on, or if you apply an external voltage (3.4 V) at the ªExt. Batt.º sockets. The backup battery must be replaced every 3 years at the latest, irrespective of memory configuration and backup operation. Replace the battery as follows:

Step

1

2

3

4

5

Action

Pull the cover downwards.

Pull the battery submodule forwards and out, and remove it.

Replace the battery.

Ensure correct polarity.

Once the new battery is fitted and system voltage is On, press the Reset button on the power supply unit.

Battery Submodule

+

*

Sockets for External Backup Voltage

Battery Submodule

Cover

Only use battery submodules with the order number 6XG3 400-2CK00.

4-66

System Manual

C79000-G8576-C199-06

Page 132
Image 132
Siemens S5-135U/155U appendix Maintenance, Replacing the Lithium Battery, Battery Submodule